Key Construction Technologies for Large-section Subway Station Inclined Shafts Reverting to Vertical Shafts
In recent years,major cities have been carrying out subway construction on a large scale.In order to reduce the interference of underground traffic construction with surface traffic,the construction method of subway stations has gradually shifted from open excavation to underground excavation.However,the cross-section of subway stations excavated underground is larger,and they are often accessed through vertical shafts or inclined shafts.How to safely and rapidly complete the transition from inclined shafts to vertical shafts for access to the main body of the station is a key and challenging aspect of construction control.Taking a certain subway underground station as an example,this paper elaborates on the traditional construction method of reverting inclined shafts to vertical shafts,analyzes the shortcomings of traditional construction methods,proposes new construction methods based on this analysis,and summarizes relevant construction techniques.
Subway underground excavationTransition from in-clined shaft to vertical shaftConstruction methodKey technologies
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